Chemical Formula: Ca2(Fe+++,Al)3(SiO4)3(OH) = Ca2(Fe,Al)Al2(SiO4)(Si2O7)O(OH)
Help on Composition: Composition: Molecular Weight = 519.3 g
 
Hydrogen 0.19 % H 1.73 % H2O 0.00 %
Oxygen 40.05 % O 0.00 % 0.00 %
Aluminum 3.90 % Al 7.36 % Al2O3 0.00 %
Silicon 16.22 % Si 34.71 % SiO2 0.00 %
Calcium 15.44 % Ca 21.60 % CaO 0.00 %
Iron 24.20 % Fe 34.60 % Fe2O3 0.00 %


100.00 % 100.00 %
 
Help on Empirical Formula: Empirical Formula: Ca2Fe3+2.25Al0.75(SiO4)3(OH)
Help on Environment: Environment: Contact metamorphic rocks
Help on Locality: Locality: Common world wide.. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: From the Greek epidosis - "addition."
Help on Synonym: Synonym: Pistacite - pistachio green